Comment on The Milky Way is probably full of dead civilizationsparentComments−deafpolygon10moif you include the earlier hominid forms, of which they were able to continue interbreeding, then you’re talking about 600k to maybe (likely not) 1 mya!
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if you include the earlier hominid forms, of which they were able to continue interbreeding, then you’re talking about 600k to maybe (likely not) 1 mya!